Hold the Option key while clicking the wi-fi symbol in your top menu bar.

Go to “Open Wireless Diagnostics,” then when that opens, go up to the top left menu bar and click the drop-down menu “Window > Scan.” That will open up a window with all the nearby wi-fi networks.

Click the “Scan Now” button on the bottom right, and your computer should recommend the best channels for you to use: say, you’re on Channel No. 1, but the best 2.4GHz channel is No. 3. Tech Insider recommends writing those down (there are options for both 2.4GHz channels and 5GHz channels).

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Next step: Get your iPhone out

Download the AirPort Utility app, and go to your phone’s settings.

Scroll down to the AirPort Utility app in your app list, and enable “WiFi Scanner.” Use the app to scan your house for Wi-Fi networks and note which channels are commonly used by your neighbors’ networks. (If you don’t have an iPhone, you can also use Acrylic Wi-Fi for Android or Windows phones.)

Now long into your router on your computer by typing your router’s IP address into your browser, just like you would any web address.

From here, go into Wireless Settings, and change the channel your network operates on to one of the recommended options that you wrote down from your computer's diagnostics window earlier. And don’t forget to save!

Firstly you need to identify which channel is the least congested, so which one has the least users on it.

NirSoft WifiIntoView will help you detect the best channel to use (Wi-fi channels overlap with nearby channels. Channels 1, 6, and 11 are the most frequently used for 2.4 GHz wi-fi, and these three are the only ones that don’t overlap with each other.)

To use NirSoft WifiIntoView , Launch the tool, locate the Channel header, and click it to sort by wi-fi channel. In the pic below, you can see that channel 6 looks a bit cluttered so channel 1 might be a better bet.

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Now you've found a channel, here's what you need to do to change the channel on your router.

Log onto your router's web interface in your web broswer.

Click on the wi-fi settings tab and locate the wi-fi channel option.

Choose your new channel.

If there are too many other nearby networks interfering with your signal, try getting a router that supports 5GHz (like a “Dual Band” router), The Manchester Evening News reported.

You can keep up to date with all the latest news in and around Cambridge by downloading our free app. It is available for the iPhone and iPad from Apple's App Store , or the Android version can be downloaded from Google Play .